Open AccessPlatinum Nanoarrays Directly Grown onto a 3D-Carbon Felt Electrode as a Bifunctional Material for Garden Compost Microbial Fuel Cell
Author(s) -
Widya Ernayati Kosimaningrum,
Mekhaissia Ouis,
Yaovi Holade,
Buchari Buchari,
Indra Noviandri,
Mostéfa Kameche,
Marc Cretin,
Christophe Innocent
Publication year - 2021
Publication title -
journal of the electrochemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.258
H-Index - 271
eISSN - 1945-7111
pISSN - 0013-4651
DOI - 10.1149/1945-7111/abde7c
Subject(s) - microbial fuel cell , anode , cathode , bifunctional , electrochemistry , electrode , power density , materials science , chemical engineering , carbon fibers , nanotechnology , proton exchange membrane fuel cell , chemistry , fuel cells , composite material , catalysis , organic chemistry , power (physics) , physics , quantum mechanics , composite number , engineering
The practical implementation of air-breathing microbial fuel cell (MFC) is critically linked to the development of efficient materials as cathode and electrochemically active biofilm-based anode. In this contribution, we demonstrate the feasibility by decorating a 3D carbon felt electrode with Pt nanoarrays (CF@Pt) as a bifunctional electrode material as efficient garden compost bioanode and air-breathing cathode. Half-cell electrochemical characterizations reveal that the onset potential of the anode reaction negatively shifts of about 800 mV to reach −0.4 V vs Ag/AgCl after the growth of the biofilm onto CF@Pt. The investigation before and after the biofilm formation shows that Pt nanoarrays act as excellent electron relays, reducing significantly the charge transfer resistance. For MFC application (with a proton exchange membrane), the use of CF@Pt as bioanode’ scaffold and CF@Pt air-cathode enables a drastically enhanced power density of P max = 292.3 mW m −2 , and a high short-circuit current density j sc = 1.9 A m −2 .